JP2000220192A - Grease gathering prevention device and grease gathering prevention method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the same grease gathering prevention device as the conventional inexpensive in a facility cost and with oil removing effect, and a grease gathering prevention method. SOLUTION: This grease gathering prevention device 10 is provided with a first tank 11 receiving from a water receiving opening 14 kitchen drain W1 containing fat and oil drained from the sink 40 of a kitchen, and a second tank 12 communicating with the bottom part of the first tank 11 and making already processed water by gathering to float fat and oil on a water surface in the kitchen drain W1 transmitted from the first tank and removing fat and oil from the kitchen drain W1. The grease gathering prevention device 10 is arranged between the exit opening 41 of the sink 40 of the kitchen and the upper face of the floor concrete of the kitchen.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to water (hereinafter referred to as "kitchen drainage") containing fats and oils (hereinafter referred to as "kitchen drainage") discharged from a kitchen sink and water (hereinafter, referred to as "kitchen drainage") removed from kitchen drainage. The present invention relates to a grease interceptor that is discharged as “treated water” and a grease intercepting method using the grease interceptor.

[0002]

2. Description of the Related Art Conventionally, in a restaurant provided inside a railway structure, for example, a viaduct, kitchen drainage generated by cooking, washing dishes, and the like in a kitchen is drained to a sink. The kitchen drainage contains animal or vegetable oils and fats (hereinafter, referred to as “oils and fats”).

When such kitchen wastewater is directly introduced into a sewage basin or the like, oils and fats in the kitchen wastewater adhere to the inner wall surface of the sewer pipe or the like in a grease form, and clog the sewer pipe or the like. In addition, fats and oils can be decomposed by bacteria and the like in nature, but if the content in water is large, it is difficult to decompose and the water quality is deteriorated.

For this reason, an NH value (normal hexane extractable material content) is defined as one of the indexes for regulating the content of fats and oils in wastewater, and it is necessary to set the value to a predetermined value or less. It is stipulated in the Water Pollution Control Law, the Sewerage Law, the Building Standards Law, and the regulations of each local government. Along with this, in kitchens such as restaurants, installation of drainage facilities (hereinafter, referred to as “grease interceptors”) for collecting and removing oils and fats from kitchen drainage is required.

Next, a conventional grease interceptor will be described with reference to FIGS. As shown in FIGS. 4 and 5, the conventional grease interceptor 50 is installed under a floor below a sink 40 of a kitchen such as a restaurant provided inside a railway viaduct.

The kitchen drainage W1 containing oils and fats discharged from the sink 40 is passed through a drain 41 from a discharge port 41 at a lower end of the sink 40, and is guided to a grease interceptor 50 from a water receiving port 54. The grease interceptor 50 has a first partition plate 55, a second partition plate 56, and a third
The tank 51, the second tank 52, and the third tank 53 are partitioned.

For this reason, the kitchen drainage W1 enters the first tank 51, and a garbage basket 61 provided with many small holes (see FIG. 5).
, Descends through the communication gap below the first partition plate 55, enters the second tank 52, and rises above the second partition plate 56. At this time, since the kitchen wastewater W1 is gradually cooled, the fats and oils contained in the kitchen wastewater W1 precipitate. Since oils and fats are lighter than water, the oils and fats precipitated from the kitchen drainage W1 float on the water surface of the second tank 52 and gather,
It solidifies to form grease-like fat G. Thereby, a part of the fats and oils in the kitchen drainage W1 is captured on the water surface of the second tank 52.

After that, the drainage water descends below the second tank 52 over the second partition plate 56, enters the third tank 53 from the communication gap below the third partition plate 57, and is drained by the drain port cover 63.
From the opening of the inside. At this time, the remaining portion of the oil and fat in the kitchen drainage W1 is also deposited on the water surface of the third tank 53 by the same operation as in the second tank 52. For this reason,
The water discharged from the third tank 53 to the outside becomes the treated water W2 from which the grease has been removed from the kitchen wastewater W1. Treated water W2
Is discharged from the drain port 62 to the outside via the drain pipe 64.

[0009]

However, in the above-mentioned conventional grease interceptor 50, the floor slab provided inside the railway viaduct is provided in order to mount the casing 60 under the floor below the kitchen sink 40. It was necessary to cut off a part of the floor concrete 71 and the floor concrete 72 to provide an opening. In order to prevent such a cut portion from becoming a structural weak point, it is necessary to take measures such as arranging reinforcing bars inside the floor slab 71 around the cut portion and reinforcing the floor beam 74. However, there is a problem that the equipment cost is expensive.

A double pit bottom plate 73 is provided below the grease interceptor 50 as a measure for preventing water leakage downward or as a measure for preventing falling objects in the case of a change in the internal layout of the kitchen. Equipment costs were even higher.

The grease-like oil G accumulated in the second tank 52 needs to be removed after being accumulated to some extent. However, since the grease interceptor 50 is arranged under the floor,
The removal operation was difficult and labor intensive, and there was a risk that the worker would fall.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and it is an object of the present invention to provide a grease interceptor having a low facility cost and a grease removing effect equivalent to conventional products. It is to provide a method of blocking.

[0013]

In order to solve the above-mentioned problems, a grease interceptor according to the present invention comprises a first tank for receiving a kitchen drain containing oils and fats discharged from a kitchen sink from a water receiving port, A second tank which communicates with one tank at the bottom and collects the oils and fats in the kitchen wastewater coming in from the first tank by floating on the water surface and removing the oils and fats from the kitchen wastewater to obtain treated water; And being disposed between an outlet of a sink of the kitchen and an upper surface of a floor of the kitchen.

In the above-described grease interceptor, preferably, the first tank and the second tank are stored in a storage container, and the storage container has a moving means that can be installed or removed below the sink. Prepare.

In the above-mentioned grease interceptor, preferably, the kitchen drainage is connected by connecting the discharge port of the kitchen sink and the water receiving port of the first tank with flexibility. A first connection pipe is provided.

Further, in the above-mentioned grease interceptor, preferably, a third port is provided which communicates with the second tank at the bottom and temporarily stores treated water entering from the second tank and then discharges the treated water from the drain port to the outside. A third tank having flexibility and the third
A second connection pipe is provided for connecting the drainage port of the tank and the floor opening formed on the floor to allow the treated water to flow therethrough.

Further, the grease intercepting method according to the present invention comprises:
A first tank for receiving kitchen wastewater containing oils and fats discharged from a kitchen sink from a water receiving port, and communicating with the first tank at a bottom portion to dispose the oils and fats in the kitchen wastewater entering from the first tank to a water surface; A grease interceptor is provided, comprising a second tank that is floated on the kitchen to remove the oil and fat from the kitchen waste water to make the treated water, and the grease interceptor is connected to an outlet of a sink of the kitchen and a floor of the kitchen. Characterized in that it is arranged between the upper surface and the upper surface.

[0018]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a conceptual diagram showing a configuration of a grease interceptor according to an embodiment of the present invention. FIG. 1A is a layout diagram in a kitchen, and FIG. The conceptual diagram which shows the relationship and the whole structure of a grease interceptor is each shown. FIG. 2 is a diagram showing a specific configuration of the grease interceptor shown in FIG. 1. FIG. 2 (A) is a front view of a kitchen sink and a grease interceptor, and FIG. The figures are shown respectively. FIG. 3 is a diagram showing a specific configuration of the grease interceptor shown in FIG.
2A is a side view of FIG. 2, and FIG. 3B is a cross-sectional view of the grease interceptor as viewed from the front.

As shown in FIG. 1A, the grease interceptor 10 of the present embodiment is provided immediately below a kitchen sink 40 of a restaurant or the like provided inside a railway viaduct.
Outlet 41 and the kitchen floor (in this case, floor concrete 7
It is installed between the upper surface of 2).

In the grease interceptor 10, a partition 19 (see FIGS. 2 and 3) is provided inside a hollow box-shaped casing 20, and as shown in FIG.
9 divides the internal space of the casing 20 into a substantially “U” shape as a whole. Further, a first partition plate 15, a second partition plate 16, a third partition plate 17, and a fourth partition plate 18 are mounted in the housing 20.

By these partitioning plates, the above-mentioned substantially “U” -shaped casing inner space is conceptually shown in FIG. 1B, and the first tank 11, the second tank 12, 3 tanks 1
It is divided into three. That is, the tank having the water surface from the inner wall of the casing 20 which is one end of the above-described substantially “U” -shaped casing inner space to the first partition plate 15 is the first tank.
The tank 11, from the first partition plate 15 to the third partition plate 17
The tank having a water surface up to the second tank 12 is a tank having a water surface from the third partition plate 17 to the inner wall of the casing 20 which is the other end of the substantially “U” -shaped casing internal space. The third tank 13.

The first tank 11 has a water receiving port 14, and the third tank 13 has a drain port 22. The space between the discharge port 41 of the kitchen sink 40 and the water receiving port 14 is the first
They are connected by a connection pipe 27 (see FIG. 2A). In addition, the second connection pipe 28 (see FIG. 2A) connects between the drain port 22 of the third tank 13 and the floor opening 72a. The first connection pipe 27 and the second connection pipe 28 have flexibility due to a flexible synthetic resin material, a bellows structure or the like.

A garbage basket 21 (see FIGS. 2 and 3) having a large number of small holes is provided below the water receiving port 14 in the first tank 11. Also, the drain port 2 in the third tank 11
2 is provided with a drain outlet cover 23 (see FIGS. 2 and 3).

A caster wheel 24 is attached to the outer bottom of the casing 20. In addition, today's body 2
A cover 26 is provided on the upper portion of the housing 0, and a handle 25 is provided on a front side surface of the casing 20.

With the above configuration, the kitchen sink 4
Kitchen wastewater W containing oils and fats discharged from the discharge port 41
1 is received in the grease interceptor 10 from the water receiving port 14, the vegetable waste and the like are rubbed off by the garbage basket 21, and only water passes into the first tank 11 through the small hole.

The kitchen drainage W1 that has passed through the garbage basket 21 is
The first tank 11 is lowered. The lower portion of the first partition plate 15 has not reached the lower end of the casing and is open, and the first tank 1
Reference numeral 1 denotes a bottom portion communicating with the second tank 12. Therefore, the kitchen drainage W1 enters the second tank 12 from the communication gap below the first partition plate 15 and rises.

The upper part of the second partition plate 16 does not reach the upper end of the casing, and the upper part is open. For this reason, the drainage goes down above the second partition plate 16. At this time, the kitchen drainage W1 is gradually cooled, so that the kitchen drainage W1 is cooled.
The fats and oils contained in 1 precipitate. Since the fats and oils are lighter than water, the fats and oils precipitated from the kitchen wastewater W1 float on the water surface of the second tank 12 and collect and solidify to become grease-like fats and oils G. Thereby, a part of the fats and oils in the kitchen drainage W <b> 1 is captured on the water surface of the second tank 12.

The lower part of the third partition plate 17 does not reach the lower end of the casing and is open, and the second tank 12 communicates with the third tank 13 at the bottom. For this reason, the treated water W2 is
It enters the third tank 53 from the communication gap below the third partition plate 17. The upper part of the fourth partition plate 18 does not reach the upper end of the casing, and the upper part is open. Thus, the treated water W2 rises in the third tank 13 and is temporarily stored in the third tank 13.

At this time, the remaining portion of the oil and fat in the kitchen drainage W1 is also deposited and captured on the water surface of the third tank 13 by the same operation as in the second tank 12. For this reason, the water discharged from the third tank 13 to the outside becomes the treated water W2 from which the fats and oils have been removed from the kitchen wastewater W1. Thereafter, the treated water W2 enters the inside through the lower opening of the drain port cover 23, and is discharged from the drain port 22 to the outside through the second connecting pipe 28, the floor opening 72a, and the drain pipe 29 (see FIG. 1A). Is done.

The grease interceptor 10 of the present embodiment has the following operation and effects.

1) The floor slab only needs to be provided with a minimum hole (floor opening 72a or the like) for passing the drain pipe 29, and it is not necessary to provide a large opening as in the prior art. No reinforcement is required, and the double pit bottom 73
Is unnecessary, so that equipment costs can be significantly reduced. Further, another drainage pipe (not shown) communicating with the second connection pipe 28 can be arranged on the floor and a floor opening can be provided at a location far away from the sink 40, so that the sink 40 is positioned directly above the track. However, there is no restriction.

2) Since the grease interceptor is installed on the floor, there is no need to cut a part of the floor, and the layout for installing a kitchen or the like inside the viaduct becomes very free, and the construction cost is increased. And the construction period can be shortened.

3) Remove the first connection pipe 27 and remove the handle 25
Can be easily pulled out because the caster wheels 24 are provided, the inside can be inspected by opening the lid 26, and the grease-like grease G accumulated in the second tank 12 can be easily and safely removed. Can be removed.
Further, it is also easy to return the grease interceptor 10 to a position below the sink 40 after the inspection and the grease removing operation. Alternatively, it is easy to replace the grease interceptor 10 with a new one.

In the above description, the casing 20 corresponds to a storage container, and the caster wheels 24 correspond to moving means.

The present invention is not limited to the above embodiment. The above embodiment is an exemplification, and has substantially the same configuration as the technical idea described in the scope of the claims of the present invention. It is included in the technical scope of the invention.

For example, in the above embodiment, an example was described in which a third tank communicating with the second tank at the bottom was provided and a drain port was provided in the third tank. However, the present invention is not limited to this example. A drain may be provided in another configuration, for example, in a lower portion of the second tank (a position rearward of the second partition plate). Since a considerable portion of the grease-like fat is accumulated and captured on the water surface of the second tank, the required grease intercepting function can be achieved even with such a configuration.

Further, in the above embodiment, an example in which the caster wheels 24 are used as the moving means has been described. However, the present invention is not limited to this example, and other configurations, for example, directly on the floor or provided on the floor The moving means may have a configuration like a “sled” that slides on a member such as a rail provided.

[0039]

As described above, according to the present invention,
Since the grease interceptor is arranged between the outlet of the kitchen sink and the upper surface of the kitchen floor, the following advantages are provided.

A) In the grease interceptor of the present invention, the floor structure only needs to be provided with a minimum hole for passing a drain pipe or the like, and it is not necessary to cut off a large opening as in the conventional case. Since no reinforcement is required and a double pit bottom is not required, the equipment cost can be significantly reduced.
In addition, other drainage pipes communicating with this grease interceptor can be placed on the floor and a floor opening can be provided at a location far away from the kitchen sink, so there are restrictions even if the sink is directly above the track. I will not receive it.

B) Since the grease interceptor of the present invention is installed on the floor, there is no need to cut off a part of the floor structure, and the layout when installing a kitchen or the like inside the viaduct is very free. Therefore, the construction cost can be reduced and the construction period can be shortened.

C) Since the grease interceptor of the present invention is provided with a moving means, it can be easily installed or removed below the sink, and the operation of removing grease deposited from kitchen wastewater can be simplified. And it can be done safely.

[Brief description of the drawings]

FIG. 1 is a conceptual diagram showing a configuration of a grease interceptor according to an embodiment of the present invention.

FIG. 2 is a diagram (1) illustrating a specific configuration of a grease interceptor according to an embodiment of the present invention.

FIG. 3 is a diagram (2) illustrating a specific configuration of a grease interceptor according to an embodiment of the present invention.

FIG. 4 is a conceptual diagram showing a configuration of a conventional grease interceptor.

FIG. 5 is a cross-sectional view showing a specific configuration of a conventional grease interceptor.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Grease interceptor 11 1st tank 12 2nd tank 13 3rd tank 14 Water receiving port 15 1st partition plate 16 2nd partition plate 17 3rd partition plate 18 4th partition plate 19 Partition wall 20 Housing (container) 21 Remaining Vegetable basket 22 Drain port 23 Drain port cover 24 Caster wheels (moving means) 25 Handle 26 Lid 27 First connection pipe 28 Second connection pipe 29 Drain pipe 40 Sink 41 Drain port 42 Drain pipe 50 Grease interceptor 51 First tank 52 Second tank 53 Third tank 54 Water receiving port 55 First partition plate 56 Second partition plate 57 Third partition plate 60 Housing 61 Garbage basket 62 Drain outlet 63 Drain outlet cover 64 Drain pipe 71 Floor slab 72 Floor concrete 72a Floor Opening 73 Double pit bottom 74 Floor beam G Grease-like fat W1 Kitchen drainage W2 Treated water

Claims (5)

[Claims] 1. A first tank for receiving a kitchen drain containing oils and fats discharged from a kitchen sink from a water receiving port, and a first tank communicating with the first tank at a bottom portion and entering the kitchen drain from the first tank. A second tank that collects the oils and fats floating on the water surface and removes the oils and oils from the kitchen wastewater to obtain treated water, and is disposed between an outlet of the kitchen sink and an upper surface of the kitchen floor. A grease interceptor characterized by being performed. 2. The grease interceptor according to claim 1, wherein the first tank and the second tank are stored in a storage container, and the storage container can be installed or removed at a position below the sink. A grease interceptor comprising means. 3. The grease interceptor according to claim 1, which has flexibility and connects between a discharge port of a sink of the kitchen and a water receiving port of the first tank to flow the drainage of the kitchen. A grease interceptor comprising a first connection pipe. 4. A grease interceptor according to claim 1, wherein said third tank communicates with said second tank at a bottom portion, and temporarily discharges treated water entering from said second tank, and then discharges the treated water from a drain port to the outside. A tank having a second connection pipe having flexibility and connecting between a drain port of the third tank and a floor opening formed in the floor to allow the treated water to flow therethrough; Grease interceptor. 5. A first tank for receiving a kitchen drain containing oils and fats discharged from a kitchen sink from a water receiving port, wherein the first tank communicates with the first tank at a bottom portion and enters the kitchen drain from the first tank. A grease interceptor comprising a second tank for collecting the oils and fats floating on the surface of the water and removing the oils and oils from the kitchen wastewater to make the water as treated water, wherein the grease interceptor is an outlet of the kitchen sink. A grease interception method, wherein the grease interception method is disposed between the grease and a top surface of the kitchen floor.